PLS HELP!!!!

1. Credit Card Debt John has a balance of $3000 on this credit card, which charges 12% per year on

unpaid balances. John will not make any additional charges with the credit card, and he will pay

$100 per month until the balance is paid off.

1. (i) Determine how many monthly payments of $100 he must make in order for the balance to fall

below $2000.

1. (ii) When he has paid off the balance, what is the total of all his payments?

1. (iii) When he has paid off the balance, what is the interest expense?